I have contradictory feelings regarding git. For more than ten years, I was using it daily without really understanding the internals... and I was often confused and frustrated. After investing some time learning how the Directed Acyclic Graph works, suddenly everything made much more sense.

And, yes: it is good to learn the underlying fundamentals of the technology we are using. But, on the other hand, it denotes a rather poor abstraction from the UX point of view, imho.

Now, when I deliver git training, I start by explaining the DAG and how there is no magic, only git. By the way, the notes and exercises of the course are in my GitHub account[1], feel free to check it out if you think it can be useful.

[1] https://github.com/ciberado/git-workshop (https://ciberado.github.io/git-workshop/)